Rock cycle Flashcards
1
Q
How old is the oldest rock?
A
4.2 billion years ago was the oldest rock
2
Q
How are igneous rocks formed?
A
Igneous rocks are formed when magma is cooled
3
Q
What forms sedimentary rocks?
A
Compaction and Cementation of sediments form sedimentary rocks.
4
Q
What forms metamorphic rocks?
A
Heat and pressure from igneous and sedimentary rocks can form metamorphic rocks.
5
Q
What is weathering?
A
Weathering is the process of breaking large rocks into smaller rocks
6
Q
What is erosion?
A
Erosion is the movement of rock and soil from one place to another
Forms from wind, ice, gravity, and water
